羧基化

A novel phosphating processing that nickel salt, manganese salt, nitro acenaphthene and carboxyl group polymer were contained in self-made Zn system phosphating, was developed for electrophoretic coating.

在自制的低温锌系磷化液基础上，通过加入镍盐、锰盐和羧基聚合物，并以硝基苊为促进剂，研制出了一种适用于电泳涂装的低锌锰改性常温磷化工艺。

The methods determing the groups in the modified starch have been developed, that is acidimetry for the basicity of acidified starch, complexing titration for the substitution degree of carboxymethyl starch, and heat paste titration and carbonyl process respectively for the carboxyl and nitrogen of oxidized starch.

建立了以酸碱滴定测定酸化淀粉的碱量、络合滴定法测定羧甲基淀粉的取代度、热糊滴定和羟胺法测定氧化淀粉中羧基及羰基、消化定氮测定阳离子淀粉等几种变性淀粉的基团分析方法。

This is exactly opposite to the order of E465/E665 in HA and the order ofΔ~ K. It shows that the larger the extent of humification, the larger the effect for reducing the rate of Phoxim hydrolysis, because the extent of HA humification is closely related to the extent of benzene in HA and the amount of carbonyl, aryl, phenolic hydroxide.

因腐殖酸腐殖化程度与腐殖酸芳构化程度、羧基、羰基和酚羟基的含量等相关，因此用腐殖酸腐殖化程度反映腐殖酸对农药水解作用大小比仅用腐殖酸中有机碳含量等因素反映更为合理。

The surface hydroxyl group onto magnetic polyvinyl acetate nanoparticles can be obtained by saponification reaction on their surface.

结果表明，磁性聚苯乙烯颗粒与丁二酸酐发生Freidel-Crafts酰基化反应，可以在颗粒表面引入少量羧基；磁性聚甲基丙烯酸甲酯颗粒分别与乙二醇、二缩三乙二醇、聚乙二醇等发生醇-酯交换反应，可以在颗粒表面接枝不同分子链长度的末端羟基；磁性聚醋酸乙烯酯颗粒经过醇解或皂化反应可以获得表面羟基；磁性聚丙烯酸甲酯颗粒通过乙二胺或1，6己二胺的胺解反应可以得到表面氨基，继而与一氯乙酸反应可以引入亚胺二乙酸基团。

Furthermore, through molecular structural design, we have also synthesized stable dual functional diphenylether polymer intermediates of ABB' types possessing ortho-dicarboxylic at one aromatic ring and diamine groups at another beginning from Xylenol and 1-Chloro-3,4-dinitrobenzene as the raw materials.

中文摘要本研究应用自氧化法与氢化法两反应，成功而有劾地制备出芳香族含酸酐及二胺基之官能基单体，并进一步经由分子结构设计，从3，4-二甲苯酚及1-氯-3，4-二硝基苯为原料，转化合成出安定性高带有羧基与双胺基双官能基之堑新ABB'型二苯醚中间体，并成功地应用此中间体从事自聚合反应，而合成分歧状聚醚亚醯胺高分子。

A process for the carbonylation of allylic butenyl ether (for example, methyl crotyl ether, 3-methoxybutene-1 and mixtures thereof) or mixture of butadiene and alcohol and production of beta-gamma unsaturated carboxylic acid esters (for example, methyl-3-pentenoate) utilizing a rhodium-containing catalyst for example, dicarbonylacetylacetonate rhodium(I or the like promoted with an iodide-containing compound (for example, HI, AlI3, SnI4, TiI4, CrI3, and CoI2 or the like).

一种将烯丙型丁烯基醚(如甲基巴豆基醚、3－甲氧基丁烯－1及其混合物)或者丁二烯与醇的混合物羰基化的方法，以及由含碘化物化合物(如HI、AlI3、SnI4、TiI4、CrI3和CoI2或等效物)促进，用含铑催化剂如二羰基乙酰丙酮酸铑(I或其等效物制备β－γ不饱和羧酸酯(如甲基－3－戊烯酸酯)的方法。

Several types of ligand reactions observed under hydrothermal condition were summed up:(1) hydrolysis of pyridine nitrile, aldehyde and ester in mixed water and alcohol into pyridine-carboxylate;(2) replacement of carboxylate group with sulfonic group;(3) coupling of phenanthroline by dehydrogen;(4) oxidative coupling of methanol into oxalic acid;(5) hydroxylation of isophthalate.

总结了以往在水热条件下观察到的几类配体反应：（1）吡啶腈、醛和酯在醇和水混合溶液中水解成吡啶羧酸；（2）磺基取代羧基反应；（3）邻菲啰啉的脱氢的聚合：（4）甲醇被氧化偶合生成草酸：（5）间苯二甲酸的羟基化反应。

The famciclovir was synthesized from purine by a series of steps by Acylation, Decarboxylation, Reduction ,and so on; Derivatives of these intermediates is described from the 6-chloro- 9H- purin-2-amine as raw materials in different conditions when the iodine and bromide were synthesized with the addition of two intermediate 6-bromo-9H-purin-2-amine and 6-iodo-9H-purin-2-amine; There is elaborated from the main part of a acetophenone, urineaminohydrochloride, phenylhydrazine, ethyl acetoacetate as raw material through a series of reactions to synthetic 3-phenyl-4-formylphenyl pyrazole and 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-aldehyde two pyrazole aldehyde, and then with 2-amino-6-chlorine-9-(2-methicillin-oxo-co-methyl-4-yl) purine reaction of the two new pyrazole purine Schiff bases.

本论文主是采用以鸟嘌呤为原料，经过一系列的酰基化，脱羧，还原等反应作用下最终得到了产物2-氨基-9-(4-乙酰氧基-3-乙酰氧基甲基丁基)嘌呤；其中的中间体衍生物主要是阐述从以2-氨基-6-氯鸟嘌呤为原料通过在不同的条件下进行溴代与碘代分别合成了另外两种中间体2-氨基-6-溴鸟嘌呤及2-氨基-6-碘鸟嘌呤；还有一部分主要是阐述从以苯乙酮，盐酸氨基脲，苯肼，乙酰乙酸乙酯为原料通过一系列的反应先合成3-苯基-4-醛基吡唑及5-氯-3-甲基-1-苯基-1H-吡唑-4-甲醛这两个吡唑醛，然后再与2-氨基-6-氯-9-(2-甲氧羰基丁酸甲酯-4-基)嘌呤反应得到了两个新型的吡唑嘌呤席夫碱

A chemical reaction resulting in the formation of at least one ester product.

羧酶，羧基酶在羧化或脱羧反应中起催化作用的一种酶

Multilayer latex particles with carboxylic polymer as core, polymer with low glass transition temperature and film-formable under room temperature as shell, and lightly crosslinked polymer as intermediate layer were prepared with unsaturated carboxylic monomers by multistage seed emulsion polymerization. Finally, the room-temperature-film-formable polymer particles with hollow structure were obtained via the alkali treatment to the multilayer latex particles.

采用羧基单体进行多阶段的种于乳液聚合，制备了内核为带羧基的聚合物、最外层为易成膜的低玻璃化温度聚合物、中间为轻度交联中间隔离层的多层核壳结构乳胶粒，最后通过碱处理制成了具有室温成膜性的中空结构聚合物微粒。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。